BBS: TELESC.NET.BR Assunto: DAY48SVR: Nws Storm Prediction Center Norman Ok De: COD Weather Processor Data: Wed, 27 May 2026 07:47:53 +0000 ----------------------------------------------------------- ACUS48 KWNS 270747 SWOD48 SPC AC 270746 Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0246 AM CDT Wed May 27 2026 Valid 301200Z - 041200Z ...DISCUSSION... On Saturday/D4, an upper low will weaken as it moves from UT into WY, with midlevel wind speeds at or below 25 kt across the northern Rockies/Plains. This feature will persist into Sunday/D5 and Monday/D6 as it moves toward MT and eventually into Canada. Given the weak winds aloft, severe potential should be relatively low, but isolated strong storms may occur over parts of the northern Plains. Farther south, stronger instability is forecast over the southern and central Plains, where 60s to lower 70s F dewpoints will exist. Although unstable, shear will be quite weak. Saturday/D4 may hold slightly greater severe potential compared to other days, as the southern lobe of the western trough lifts north out of the southern/central Plains. However, shear will still be marginal, and the likelihood antecedent precip/outflows lessens predictability in the weak forcing pattern. The stronger instability air mass appear most prominent through about Monday/D6. Thereafter, an upper trough may amplify over the eastern CONUS, driving high pressure south across the eastern CONUS/MS Valley. ..Jewell.. 05/27/2026 = = = To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. --- SBBSecho 3.28-Linux * Origin: Capitol City Online (1:2320/107) ----------------------------------------------------------- [Voltar]